Thomas mcavity



UNITED STATES PATENT OFFICE.

THOMAS MCAVITY, JR., OF ST. JOHN, NEW BRUNSWICK, CANADA;

RADIATOR.

SPECIFICATION forming part of Letters Patent No. 281,897, dated July 24, 1888.

YApplication filed March 9, 1883. (Model.)

invented a new and useful Improvement in,

Radiators, of which the following is a full, clear, and exact description.

This invention relates to an improvement in radiators for steam and hot-water heating apparatus; and it consists of the combination and arrangement of parts, substantially as hereinafter fully set forth and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in both figures.

Figure l is a vertical section of a radiator of my improved construction, and Fig. 2 is aplan view of the same.

A is the hollow base or chamber provided with inlet a and outlet b.

B B are the tubes, and G the upper or circulation chamber. Thetub'es B are of wroughtiron, brass, or copper, and are screwed into the lower base, A, and expanded at their ends entering the upper chamber, so that they are held irmly and the joint made steam-tight; or in place of being expanded the tubes may be brazed.

To allow of the work of securing the upper ends of the tubes the upper plate of the'chamber C is formed with openings above the holes in thetlower plate, so that proper tools can be inserted, and these openings are closed by screw-plugs d.

This construction of radiator secures a perfeet circulation and a large extent of heatingsurface.

The radiator may be used with either steam or hot water, and in the latter case the base is to be tted with a division-plate, as shown in dotted lines at i, to insure, the circulation of the water through the tubes.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- The radiator consisting of the base-chamber A, with a subdividing-partition, c', arranged between the supply and discharge openings a b, the series of parallel tubes B, screwed upon the base-chamber, and the circulating top chamber, C, superposed and wedged upon the upper ends of the tubes B, said top chamber having a series of screw-threaded plugged apertures, essentially as shown and described.

THOMAS MCAVITY, JR.

Vitnesses:

/CHAs CosTER,

F. E. KETCHUM. 

